The Game Pocket Computer used an LCD screen with a 75 × 64 resolution, and could produce graphics at about the same level as early Atari 2600 games. The system was a failure in Japan, and as a result, only 5 games were made for it. A puzzle game and a paint program were built into the system. It was powered by 4 AA batteries, and screen's brightness could be adjusted by the user. Possibly due to its failure in Japan, the Game Pocket Computer was never released in North America.
The unit is extremely rare, and units on eBay can go for hundreds of dollars, when and if they turn up.
Except for their moderately successful Cassette Vision, Epoch had no other released systems.